Robot Arm Kits & Affordable Arms for AI & Education

Robot arm kits from Fashion Star cover teleoperation, imitation learning and robotics education — from a single 6+1 DoF leader arm to a complete dual-arm set. Every kit ships with all the parts, the firmware and the open-source LeRobot SDK.

What Is a Robot Arm Kit?

A DIY robot arm kit arrives as parts — servos, structural links, cabling and fasteners — that you assemble into a working arm using the included documentation. Every Fashion Star kit uses the same 6+1 DoF architecture, in-house UART bus servos and LeRobot SDK support as the assembled version of the same arm, so the two differ only in how much building is left to you.

For a lab, a classroom or a prototyping bench, that difference tends to pay for itself. You learn the mechanics of every joint while you build it, you can replace a single servo or bracket rather than a whole arm, and the published CAD files let you modify the structure later. Most kits assemble in one to two hours — the Star Arm 102-LD leader arm has 11 structural parts and 7 joint servos.

What's in the box

• Bus servos — matched to the configuration you select
• Structural parts — brackets and links, with CAD and STEP files published
• Cabling and fasteners — everything needed to finish the build
• Documentation — a step-by-step assembly guide and links to the SDK

How to Choose a Robot Arm Kit?

Start with the role the arm plays. A leader arm is moved by hand to record a motion — it is the arm used for teaching and collecting demonstration data. A follower arm replays what the leader records, and is chosen by how far it must reach and how much it must lift. The LeRobot workflow expects both roles, so collecting data for imitation learning usually means a matched set rather than a single arm.

Three specifications decide the rest:

• Degrees of freedom — every kit here is 6+1 DoF (six joints plus a gripper), so this rarely changes the decision
• Reach — 420mm on Star Arm 102, 470mm on the StarAI Arm Viola, 670mm on the Cello
• Payload — 300g to 750g depending on the follower

Star Arm 102 and PiPER Mate configurations are available as a kit or assembled and tested; both ship with identical hardware and firmware, and the form is selected on the product page.

The Three Robot Arm Series

Star Arm 102 — The 6+1 DoF, 420mm platform for teleoperation and imitation learning. LD and HD leader arms and an FL follower, each available assembled or as a kit. Explore the Star Arm 102 series →

PiPER Mate — A compact leader arm with the AgileX PiPER joint layout and 100Hz teleoperation, built for collecting training data alongside a PiPER follower. View PiPER Mate →

StarAI Arm — Leader, follower and dual-arm sets at 470mm and 670mm reach, with payloads up to 750g and ALOHA-style configurations. Explore the StarAI Arm series →